Hi Paul...sorry for not spilling the goods along with the question at hand but the Compufoil calculations were right ,it just did not give me a c/g which I should have know because it never asked for it ..all it does ie compute the MAN, aspect ratio,areaans some other stuff. It is left up to the modler to be smart enough to then apply what ever % he/she wants. I guess my next question is once the man chord is known what;t the formula for getting the % of a number such as 11.875? I should know this because it is basic math but as with everything else thst goes when you get old the memory goes too.